Formation of oxidation byproducts from ozonation of wastewater

Eric C. Wert; Fernando L. Rosario-Ortiz; Doug D. Drury; Shane A. Snyder

doi:10.1016/j.watres.2007.01.020

Formation of oxidation byproducts from ozonation of wastewater

Eric C. Wert, Fernando L. Rosario-Ortiz, Doug D. Drury, Shane A. Snyder

Chemical and Environmental Engineering

Research output: Contribution to journal › Article › peer-review

250 Scopus citations

Abstract

Disinfection byproduct (DBP) formation in tertiary wastewater was examined after ozonation (O₃) and advanced oxidation with O₃ and hydrogen peroxide (O₃/H₂O₂). O₃ and O₃/H₂O₂ were applied at multiple dosages to investigate DBP formation during coliform disinfection and trace contaminant oxidation. Results showed O₃ provided superior disinfection of fecal and total coliforms compared to O₃/H₂O₂. Color, UV absorbance, and SUVA were reduced by O₃ and O₃/H₂O₂, offering wastewater utilities a few potential surrogates to monitor disinfection or trace contaminant oxidation. At equivalent O₃ dosages, O₃/H₂O₂ produced greater concentrations of assimilable organic carbon (5-52%), aldehydes (31-47%), and carboxylic acids (12-43%) compared to O₃ alone, indicating that organic DBP formation is largely dependent upon hydroxyl radical exposure. Bromate formation occurred when O₃ dosages exceeded the O₃ demand of the wastewater. Bench-scale tests with free chlorine showed O₃ is capable of reducing total organic halide (TOX) formation potential by at least 20%. In summary, O₃ provided superior disinfection compared to O₃/H₂O₂ while minimizing DBP concentrations. These are important considerations for water reuse, aquifer storage and recovery, and advanced wastewater treatment applications.

Original language	English (US)
Pages (from-to)	1481-1490
Number of pages	10
Journal	Water research
Volume	41
Issue number	7
DOIs	https://doi.org/10.1016/j.watres.2007.01.020
State	Published - Apr 2007

Keywords

Advanced oxidation process (AOP)
Aldehydes
Bromate
Carboxylic acids
Disinfection byproducts (DBP)
Hydroxyl radicals
Ozone
Wastewater
Water reuse

ASJC Scopus subject areas

Water Science and Technology
Ecological Modeling
Pollution
Waste Management and Disposal
Environmental Engineering
Civil and Structural Engineering

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10.1016/j.watres.2007.01.020

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title = "Formation of oxidation byproducts from ozonation of wastewater",

abstract = "Disinfection byproduct (DBP) formation in tertiary wastewater was examined after ozonation (O3) and advanced oxidation with O3 and hydrogen peroxide (O3/H2O2). O3 and O3/H2O2 were applied at multiple dosages to investigate DBP formation during coliform disinfection and trace contaminant oxidation. Results showed O3 provided superior disinfection of fecal and total coliforms compared to O3/H2O2. Color, UV absorbance, and SUVA were reduced by O3 and O3/H2O2, offering wastewater utilities a few potential surrogates to monitor disinfection or trace contaminant oxidation. At equivalent O3 dosages, O3/H2O2 produced greater concentrations of assimilable organic carbon (5-52%), aldehydes (31-47%), and carboxylic acids (12-43%) compared to O3 alone, indicating that organic DBP formation is largely dependent upon hydroxyl radical exposure. Bromate formation occurred when O3 dosages exceeded the O3 demand of the wastewater. Bench-scale tests with free chlorine showed O3 is capable of reducing total organic halide (TOX) formation potential by at least 20%. In summary, O3 provided superior disinfection compared to O3/H2O2 while minimizing DBP concentrations. These are important considerations for water reuse, aquifer storage and recovery, and advanced wastewater treatment applications.",

keywords = "Advanced oxidation process (AOP), Aldehydes, Bromate, Carboxylic acids, Disinfection byproducts (DBP), Hydroxyl radicals, Ozone, Wastewater, Water reuse",

author = "Wert, {Eric C.} and Rosario-Ortiz, {Fernando L.} and Drury, {Doug D.} and Snyder, {Shane A.}",

year = "2007",

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doi = "10.1016/j.watres.2007.01.020",

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pages = "1481--1490",

journal = "Water research",

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TY - JOUR

T1 - Formation of oxidation byproducts from ozonation of wastewater

AU - Wert, Eric C.

AU - Rosario-Ortiz, Fernando L.

AU - Drury, Doug D.

AU - Snyder, Shane A.

PY - 2007/4

Y1 - 2007/4

N2 - Disinfection byproduct (DBP) formation in tertiary wastewater was examined after ozonation (O3) and advanced oxidation with O3 and hydrogen peroxide (O3/H2O2). O3 and O3/H2O2 were applied at multiple dosages to investigate DBP formation during coliform disinfection and trace contaminant oxidation. Results showed O3 provided superior disinfection of fecal and total coliforms compared to O3/H2O2. Color, UV absorbance, and SUVA were reduced by O3 and O3/H2O2, offering wastewater utilities a few potential surrogates to monitor disinfection or trace contaminant oxidation. At equivalent O3 dosages, O3/H2O2 produced greater concentrations of assimilable organic carbon (5-52%), aldehydes (31-47%), and carboxylic acids (12-43%) compared to O3 alone, indicating that organic DBP formation is largely dependent upon hydroxyl radical exposure. Bromate formation occurred when O3 dosages exceeded the O3 demand of the wastewater. Bench-scale tests with free chlorine showed O3 is capable of reducing total organic halide (TOX) formation potential by at least 20%. In summary, O3 provided superior disinfection compared to O3/H2O2 while minimizing DBP concentrations. These are important considerations for water reuse, aquifer storage and recovery, and advanced wastewater treatment applications.

AB - Disinfection byproduct (DBP) formation in tertiary wastewater was examined after ozonation (O3) and advanced oxidation with O3 and hydrogen peroxide (O3/H2O2). O3 and O3/H2O2 were applied at multiple dosages to investigate DBP formation during coliform disinfection and trace contaminant oxidation. Results showed O3 provided superior disinfection of fecal and total coliforms compared to O3/H2O2. Color, UV absorbance, and SUVA were reduced by O3 and O3/H2O2, offering wastewater utilities a few potential surrogates to monitor disinfection or trace contaminant oxidation. At equivalent O3 dosages, O3/H2O2 produced greater concentrations of assimilable organic carbon (5-52%), aldehydes (31-47%), and carboxylic acids (12-43%) compared to O3 alone, indicating that organic DBP formation is largely dependent upon hydroxyl radical exposure. Bromate formation occurred when O3 dosages exceeded the O3 demand of the wastewater. Bench-scale tests with free chlorine showed O3 is capable of reducing total organic halide (TOX) formation potential by at least 20%. In summary, O3 provided superior disinfection compared to O3/H2O2 while minimizing DBP concentrations. These are important considerations for water reuse, aquifer storage and recovery, and advanced wastewater treatment applications.

KW - Advanced oxidation process (AOP)

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KW - Bromate

KW - Carboxylic acids

KW - Disinfection byproducts (DBP)

KW - Hydroxyl radicals

KW - Ozone

KW - Wastewater

KW - Water reuse

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Formation of oxidation byproducts from ozonation of wastewater

Abstract

Keywords

ASJC Scopus subject areas

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